Abstract
AME Aquatic Microbial Ecology Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials AME 49:243-253 (2007) - DOI: https://doi.org/10.3354/ame01147 Particle capture by marine bacteria Yuna Seo*, Eiko Ikemoto, Akihiro Yoshida, Kazuhiro Kogure Ocean Research Institute, The University of Tokyo, 1-15-1, Minamidai, Nakano-ku, Tokyo 164-8639, Japan *Email: ynseo@ori.u-tokyo.ac.jp ABSTRACT: In aquatic environments large numbers of submicron particles are generally present, and their turnover and fate are of considerable ecological importance in geochemical cycles. Efficient degradation of submicron particles can be attained if the particles are retained on the surfaces of bacterial cells rather than remaining suspended in the aqueous phase. We hypothesized that some bacterial groups possess particle-capture (PC) ability. To verify this hypothesis, we took 2 approaches. First, paramagnetic particles were added to natural seawater samples to separate out bacterial groups with PC capabilities. Method development was carried out in combination with community structure analysis of the separated bacteria by denaturing gradient gel electrophoresis (DGGE) and multidimensional scaling (MDS). Bacterial groups recovered by this new approach were different from either the representative ones in the original seawater sample or large particle associated bacterial groups. Second, atomic force microscopy was used to directly observe the submicron particles within natural bacterial populations. The number of cells retaining submicron particles was high in the inner part of Tokyo Bay and at depths of 500 to 2000 m in the open ocean. We concluded that there are bacterial groups in natural seawater that possess PC ability and we successfully collected these cells using the new paramagnetic particle method presented here. KEY WORDS: Submicron particles · Particle-capturing ability · DGGE-MDS · Atomic force microscopy · AFM Full text in pdf format PreviousNextCite this article as: Seo Y, Ikemoto E, Yoshida A, Kogure K (2007) Particle capture by marine bacteria. Aquat Microb Ecol 49:243-253. https://doi.org/10.3354/ame01147 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in AME Vol. 49, No. 3. Online publication date: November 29, 2007 Print ISSN: 0948-3055; Online ISSN: 1616-1564 Copyright © 2007 Inter-Research.
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